671143121 has 8 divisors (see below), whose sum is σ = 732857664. Its totient is φ = 609545520.

The previous prime is 671143079. The next prime is 671143139. The reversal of 671143121 is 121341176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671143121 - 2¹⁰ = 671142097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671143181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17006 + ... + 40391.

It is an arithmetic number, because the mean of its divisors is an integer number (91607208).

Almost surely, 2^671143121 is an apocalyptic number.

It is an amenable number.

671143121 is a deficient number, since it is larger than the sum of its proper divisors (61714543).

671143121 is a wasteful number, since it uses less digits than its factorization.

671143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58471.

The product of its digits is 1008, while the sum is 26.

The square root of 671143121 is about 25906.4301091447. The cubic root of 671143121 is about 875.5313761756.

Adding to 671143121 its reverse (121341176), we get a palindrome (792484297).

The spelling of 671143121 in words is "six hundred seventy-one million, one hundred forty-three thousand, one hundred twenty-one".